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Lots of shader changes, basic primitive writing

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Dynamitos
2024-05-30 21:24:21 +02:00
parent f278afad66
commit 953c90f2de
18 changed files with 599 additions and 464 deletions
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res/shaders/MeshletPass.slang
+15 -12
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@@ -5,21 +5,25 @@ import MaterialParameter;
struct PrimitiveAttributes
{
uint cull: SV_CullPrimitive;
bool cull: SV_CullPrimitive;
};
[numthreads(MESH_GROUP_SIZE, 1, 1)]
[outputtopology("triangle")]
[shader("mesh")]
void meshMain(
in uint threadID: SV_GroupIndex,
in uint groupID: SV_GroupID,
in payload MeshPayload meshPayload,
out vertices FragmentParameter vertices[MAX_VERTICES],
out indices uint3 indices[MAX_PRIMITIVES]
){
InstanceData inst = pScene.instances[meshPayload.instanceId];
MeshletDescription m = pScene.meshletInfos[meshPayload.culledMeshlets[groupID]];
in uint threadID: SV_GroupIndex,
in uint groupID: SV_GroupID,
in payload MeshPayload meshPayload,
out vertices FragmentParameter vertices[MAX_VERTICES],
out indices uint3 indices[MAX_PRIMITIVES],
out primitives PrimitiveAttributes prim[MAX_PRIMITIVES]
) {
// meshlet number relative to start for this instance
uint meshletNumber = meshPayload.culledMeshlets[groupID];
InstanceData inst = pScene.instances[meshPayload.instanceId];
MeshletDescription m = pScene.meshletInfos[meshPayload.meshletOffset + meshletNumber];
MeshletCullingInfo cull = pScene.culledMeshlets[meshPayload.cullingOffset + meshletNumber];
SetMeshOutputCounts(m.vertexCount, m.primitiveCount);
for(uint i = threadID; i < MAX_PRIMITIVES; i += MESH_GROUP_SIZE)
@@ -29,7 +33,8 @@ void meshMain(
uint local_idx0 = pScene.primitiveIndices[m.primitiveOffset + (p * 3) + 0];
uint local_idx1 = pScene.primitiveIndices[m.primitiveOffset + (p * 3) + 1];
uint local_idx2 = pScene.primitiveIndices[m.primitiveOffset + (p * 3) + 2];
indices[p] = uint3(local_idx0, local_idx1, local_idx2);
indices[p] = uint3(local_idx0, local_idx1, local_idx2);
prim[p].cull = cull.triangleCulled(p);
}
}
for(uint i = threadID; i < MAX_VERTICES; i += MESH_GROUP_SIZE)
@@ -42,8 +47,6 @@ void meshMain(
#else
VertexAttributes attr = pVertexData.getAttributes(m.indicesOffset + vertexIndex);
#endif
attr.meshletId = -1;
vertices[v] = attr.getParameter(inst.transformMatrix);
}
}